It's certainly not the most practical thing, but this Scale Wooden Roller Coaster ($700) is rather amazing nonetheless. Built from 464 pieces of laser-cut birch, this functional 1:48 scale homage to early 20th century coasters features four hills, three turns, flashing LEDs that wrap around the red handrails, and a single rotating spring that drags the car back up the hill for the next run. [via]